Vehicle transmission.



F. C. AVERY.

VEHICLE TRANSMISSION.

.APPLICATION FILED sEPT.|1.191s.

E @mw I .HI -8%- .I IIIII.

Patented July 20, 1915.

2 SIHEETIS-SHEETI n Il I Q.. mv.

F. C. AVERY.

VEHICLE TRANSMISSION.

mmm/111011111131) sEPT.11,1913.

Patented July 20, 1915.

2 SHEETS-SHEET 2.

WAM

.FREDERICK o. AVERY, or CHICAGO, ILLINOIS.

VEHICLE TRANSMISSION. y i

of motor vehicles, and yespecially to. the' method of flexibly suspendinga frictional 'transmission in said vehicles.

rllhe object of this invention is to provide a construction or means of attaching a transmission frame to a vehicle frame which will allow the vehicle frame to twist out of place under load without affecting the free movement of the transmission parts. Y

I attain the above object by the device illustrated in the accompanying drawings, yin which l Figure 1 is a top plan viewv of my iiexible Atransmission drive su .i ort a ortionof theY vehicle frame being shown in dotted lines; Fig. 2 is a vertical section on line 2'-2 of lig. 1, and- Fig 3 is a vside elevation of my invention, a portion of the frame of the vehicle being' shown. l A

Similar reference characters refer tosimilarparts throughout the several views.

The reference character 4 designates two parallel side beams of a transmission frame,`

the forward end thereofbeing bent' on la curve to form the front 4, and a cross-member 4b is rigidly secured to the rear of said members 4. The, forwardportion 4a of said frame, is reinforced by diagonalrods exv y y "the frame, and are secured thereto by bolts tending to the two side membersof said frame. A central bearing 6, on said forward portion 4a, and a central bearing 7, on

the rear cross member 4b, support a power i driven shaft 8, at the forward end of which, and adjacent the bearing 6, is a thrust bearing 9. A yoke 10c engages the bearing 9 and a counter shaft 10 extends from said yyoke 10c beyond the frame work'of the vehicle, and has a bearing 10d on the transmission frame. Levers 10a and 10b' are `keyed to said shaft 10 at right angles thereto.v

A driving disk 11, is rigidly secured to the thrust bearing 9, and so positioned that a pair of driving wheels 12, frictionally engage the inner surface of ysaid disk. The wheels 12 are splined to stud shafts 13, mounted at right angles tothe shaft 8, in end bearings 14 and 15 secured to saidtra-ns- Speecation of Lettersy Patent.

mission frame. A sprocket wheel 16 is driven directly from the shaft 13, while a sprocket" wheel 17 is driven indirectly throughv suitable gears inelosed and journaled in the bearing l5 and casing 17a, said gears not being shown. The inner ends of the two Ashafts 13, are journaled in a central `bearing 19, said bearing being cast integraly with, or bolted to, a supporting plate 20 arms Patented July 20, 1915. l Application filed September 11, 1913. Serial No. 789,224.

or supports 20a, extend downwardly therefrom and are secured to two transverse tubular rods 21 the ends of said rods are supported by bearings 20h, which are permanently lsecured and `extend Adownwardly at right angles to the sides of the transmission frame,

two on each side of said frame. A reverse driving disk 22, vrigidly secured to the vabove said shaft 8, and somewhat smaller in diaineter than the fdisk 11, is located directly opposite to said latterdisk, and directly in front of and adjacent to the bearing 7.

Journaled in said` bearing 7, at7a, (Fig. 2) and extending parallel with the rearof the frame 4, is a shaft 23the other end of which passes through, and is journaled at 23", to the lower portion ofthe support or bearing 34, its outer end being keyed tothe lever 23a, which extends at right angles thereto (see Fig. 3'). At the ,oppositezend of said shaft '23, one on each side of thefbearing 7a, are

keyed two crank arms 24, at the outer ends of'which arel pivoted two rotatable links 25, froi'nwhich extend adjustable links 26 and 27, their outery endsbeingv pivoted at 28 to the aiims'of bellY crank'leve'rs 29." lSaid levers in turn are pivoted at 30to bra-ces 32, which extendy diagonally across the rear corners of '33. The forward ends 29a ofthe levers 29,

terminate in clutch yokes 29h, the arms of which travel in guideways in the peripheries of collars or hubs 31, which are integral` with, and form a part of, the friction wheels 12, which are splined to the stud shafts 13.

At the rear corners of the frame 4, are rigidly secured bearings 34.l kThrough these bearings, extending outwardly, are studv shafts 34a, at the outer ends of which are permanently secured vthe `horizontally dis posed plates A and C respectively. The

` studs 34a are so mounted in the bearings 34 as to permit free rocking or swinging movements by the plates A and C, and as .said i plates are secured to and. supported by the parallel beams of the vehicle frame. D, they will therefore permit of the vertical displacement of said frame without affecting said plates. Said vehicle frame is secured to the plates A and C by suitable straps 35, and nuts 3G, said straps passing over said frames and being bolted through said plates, as shown in F ig. 3.

Extending vertically from the bearing 6, is a plate B, somewhat similar to the above mentioned plates A and C. A cross member E, of the vehicle frame, which is bolted to the two beams D, rests upon the bearing B, and is secured thereto by clip straps 35', and nuts 36, the straps passing throuOh a plate 37, on top of the cross member E, and then under the flanges of the plate B. rThis connection effects a flexible connection between the vehicle frame and the transmission frame. rEhe above said means of attaching the transmission frame to the vehicle frame, allows the latter considerable twist and vertical deiiection under a heavy load without distorting the transmission and thereby effecting the free movement ofthe transmission parts.

I do not describe in detail the friction transmission shown, as same forms no part of my invention which relates to the means for connecting said transmission as an entirety to the vehicle frame, in which, while providing a strong and rigid support for the transmission members and their operan ing connections, l have also provided for the free swinging action of the said transmis sion as a whole relative to the vehicle frame by the rotatable bearings A, B and C.

l am aware that flexible suspension means have been provided between transmission gearings and motor vehicle frames, so that l do not broadly claim same but Having thus described my invention what I claim is 1. ln combination with a motor vehicle, comprising a frame or chassis, a rigid transmission frame, a transmission and its oper ating levers mounted upon and supported by said transmission frame, said transmis sion comprising two friction drive-whcels, separate shafts therefor, and a center bearing common to said shafts, and means for yieldingly supporting said transmission frame, consisting of three bearings attached to the frame of said vehicle, and rotatable connections between said transmission frame and said bearings.

2. In combination with a motor vehicle, a frictional transmission and its operating levers, said transmission comprising two friction drive-wheels, separate shafts therefor, and a center bearing common to said shafts, a rigid supporting frame for said transmission, a bearing member rigidly secured to the front of said frame, and rotatably connected to the frame of said vehicle,

Vbearing members on the sides of said supporting frame, said bearing members being rotatably mounted on said vehicle frame.

3. ln combination with a motor vehicle, comprising a frame or chassis, a rigid transmission frame, a frictional transmission with its operating levers mounted upon said trans mission frame, said transmission comprisingl two friction drive-wheels, separate shafts therefor, and a center bearing common to said shafts, means for supporting said transmission frame consisting of a drive shaft bearing rigidly secured to the center of the forward portion of said transmission frame, and swingingly secured to the cross member of said chassis frame, and a bearing rotatably mounted on each side of said transmission. frame and secured to thev side members of said chassis.

in testimony whereof l afliX my signature in the presence oftwo witnesses.

FREDERICK C. AVERY.

Vllitnesses l Gr. W. HILTABRAND, i ,ll/l. A. MILonD.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Eatents, Washington, D. G. 

